如何获取cosmos db容器中所有文档的所有字段名

const CosmosClient = require("@azure/cosmos").CosmosClient;

async function getDocumentFields(containerId) {
  const endpoint = "your-cosmosdb-endpoint";
  const key = "your-cosmosdb-key";
  const client = new CosmosClient({ endpoint, key });

  const container = client.database("your-database-id").container(containerId);

  const query = "SELECT * FROM c";
  const { resources: documents } = await container.items.query(query).fetchAll();

  const fieldNames = new Set();

  documents.forEach((document) => {
    Object.keys(document).forEach((fieldName) => {
      fieldNames.add(fieldName);
    });
  });

  return Array.from(fieldNames);
}

const containerId = "your-container-id";
getDocumentFields(containerId)
  .then((fieldNames) => {
    console.log("All field names:", fieldNames);
  })
  .catch((error) => {
    console.error("Error:", error);
  });